1,721,017 research outputs found
Interventional radiology in gastrointestinal neoplasms
No full textInterventional radiology plays a significant role in different fields of gastrointestinal oncology. Percutaneous techniques can be used to diagnose and stage bile duct and pancreatic cancer. Palliation of esophageal tumors and malignant biliary obstruction may be achieved with interventional techniques, whereas curative attempts are directed mainly towards primary and secondary liver tumors. The therapeutic potential of interventional radiology is still expanding, as are all other forms of minimally invasive therapy. This article reviews the relevant contributions on this subject that have appeared in the past year. The introduction of new techniques is described, and the results of clinical studies are discussed
[Comparison of computerized tomography and magnetic resonance with fast sequences with and without paramagnetic contrast media in the assessment of liver metastasis: qualitative and quantitative analysis].
No full textWe compared unenhanced and contrast-enhanced fast MRI and CT in the detection of liver metastases. Eleven patients with single or multiple hepatic lesions (42 in all) were submitted to CT and MR studies; T1- and T2-weighted TSE, T2-weighted TSE with fat suppression, unenhanced breath-hold TFE and early or delayed enhanced breath-hold TFE images were acquired with a 1.5 T super-conductive magnet (Philips NT). The quantitative analysis of all MR images was performed for contrast/noise ratio (CNR) and number of detected lesions; MR and CT images were also compared qualitatively for lesion conspicuity, anatomical structure identification and artifacts. The results were compared with Student's t test. Early enhanced breath-hold TFE was statistically superior to T1-weighted TSE (p = .0009), T2-weighted TSE (p = .01) and CT (p = .0004) for lesion conspicuity and to T1-weighted TSE, T2-weighted TSE, unenhanced TFE (p = .0001) and CT (p = .01) for anatomical structure identification. CT was superior to T1- and T2-weighted TSE (p = .0001) and unenhanced TFE (p = .004) for the lack of artifacts. Fat-suppressed T2-weighted TSE images had a statistically higher CNR than T2-weighted TSE (p = .02), T1-weighted TSE (p = .0006) and unenhanced and delayed TFE sequences (p = .007; p = .0001, respectively). To conclude, MRI appears superior to CT in the detection of liver metastases; the examination should include early enhanced breath-hold T1-weighted TFE and T2-weighted fat-suppressed TSE images
The role of angiography in hepatocellular carcinoma.
No full textThe purpose of this study was to evaluate the role of combined CT hepatic angiography (CTHA) and CT during arterial portography (CTAP) and angiography in the diagnosis and management of patients with hepatocellular carcinomas (HCC
Nonencapsulated ancient schwannoma of the renal sinus.
No full textWe describe a case of nonencapsulated ancient schwannoma of the renal sinus in a patient with obstructive uropath
[Hydrospermatocyst with ectopic insertion of the ureter associated with homolateral renal agenesis. A magnetic resonance case study].
No full textA case of a patient with ydrospermatocyst with ectopic insertion of the ureter associated with homolateral renal agenesis is presented. The diagnosis with magnetic resonance is reviewed
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